This is the last room I have left. I only have 37% complete. Helps for other platforms mention WL on all desks, then depulso on first two, but I can't seem to get it to work. Nothing happens. Is this what is needed for wii, too? Is there specific sequence?

So, i dont have 100% but i went from having 10% to now 92%, I know you have to do some stuff in umbridge's office, but in the class room, you do incendio on the furnace in the corner, you have to wingardium leviosa all the desk lids, and then depulso the first desk on both sides of the rows. i know you have to depulso the projector and the cupboard at the back. hope some of this helps!